| monotreme |
the most primitive mammals comprising the only extant members of the subclass Prototheria
Ãâó: wordnet.princeton.edu/perl/webwn
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|---|---|
| monotreme |
A mammal that lays eggs. The platypus and the echidna are the only living forms
Ãâó: www.alphalink.com.au/~dannj/gloss.htm
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